Silicon nanocrystals embedded in a silicon-rich silicon oxide matrix doped with Er ions have been fabricated by electron cyclotron resonance plasma-enhanced chemical vapor deposition. Indirect excitation of erbium photoluminescence via silicon nanocrystals has been investigated. Temperature quenching of the photoluminescence originating from the silicon nanocrystals and the erbium ions has been...

We demonstrate an optical unstable phase for a laser driven erbium ion ensemble. The transmitted light through erbium-doped yttrium orthosillicate crystal becomes dynamically when illuminated by strong continuous-wave laser. Transient net gain was recorded if the passes sample twice. experimental results are understood in framework of many-body system interacting with classical field, where ion...

We report the analysis of paired photon pulses arising from two cascading transitions in continuously pumped Erbium-doped YLiF$_4$ 1% and 0.01% crystals at 1.6 K. The dependence pulse peak intensity on squared number involved Erbium ions, between 10$^{11}$ 10$^{13}$, definitely identifies cooperative nature pulsed emissions, that are generated by subsequent, spontaneous formation coherent state...

This paper describes the design and implementation of an advanced photonics experiment aimed at the undergraduate students’ level. The experiment uses erbium-doped fiber to implement three functions through slight modifications of the setup. The functions are a broadband light source, a multi-wavelength optical amplifier, and a tunable fiber laser. As part of an Optical Communication Systems co...

We report trio upconversion laser action in Er:LiYF(4) with excitation at 1.55 microm resulting in cw emission at 0.55 microm to a temperature of 95 K and contrast its performance with earlier green erbium upconversion lasers.

We report on the first synthesis and structural characterizations of a new Erbium (Er) compound, the erbium chloride silicate (ECS, Er3Cl(SiO4)2) single crystal in a Si-ECS core-shell nanowire form. The Erconcentration in ECS at 1.6x10 22 cm −3 is three orders of magnitude higher than that of the Er-doped materials. Photoluminescence spectra at both low and room temperatures exhibit well separa...

co2+ & er3+ co-doped zno nanocrystals were synthesized by the hydrothermal method at 180°c and ph= 12 for 48 h. powder xrd patterns indicate that the zn1-2xerxcoxo crystals (0.00

BACKGROUND Reduced tooth structure in the pediatric and adolescent population is frequently restored with prefabricated zirconia crowns. On permanent teeth, these restorations may need to be removed replaced restorations. OBJECTIVES To explore compare use of 2 high-powered erbium lasers for removing crowns from molar teeth as a non-invasive alternative rotary instruments. MATERIAL AND METHODS T...